Intraclass correlation associated with therapists: estimates and applications in planning psychotherapy research

It is essential that outcome research permit clear conclusions to be drawn about the efficacy of interventions. The common practice of nesting therapists within conditions can pose important methodological challenges that affect interpretation, particularly if the study is not powered to account for the nested design. An obstacle to the optimal design of these studies is the lack of data about the intraclass correlation coefficient (ICC), which measures the statistical dependencies introduced by nesting. To begin the development of a public database of ICC estimates, the authors investigated ICCs for a variety outcomes reported in 20 psychotherapy outcome studies. The magnitude of the 495 ICC estimates varied widely across measures and studies. The authors provide recommendations regarding how to select and aggregate ICC estimates for power calculations and show how researchers can use ICC estimates to choose the number of patients and therapists that will optimize power. Attention to these recommendations will strengthen the validity of inferences drawn from psychotherapy studies that nest therapists within conditions.     

Restorative biological processes and health

Research on psychological influences on physiology primarily focuses on biological responses during stressful challenges, and how those responses can become dysregulated with prolonged or repeated exposure to stressful circumstances. At the same time, humans spend considerable time recovering from those challenges, and a host of biological processes involved in restoration and repair take place during normal, non-stressed activities. We review restorative biological processes and evidence for links between psychosocial factors and several restorative processes including sleep, wound healing, antioxidant production, DNA repair, and telomerase function. Across these biological processes, a growing body of evidence suggests that experiencing negative emotional states, including acute and chronic stress, depressive symptoms, and individual differences in negative affectivity and hostility, can influence these restorative processes. This review calls attention to restorative processes as fruitful mechanisms and outcomes for future biobehavioral research.     

The development of early literacy in Steiner‐ and standard‐educated children

Background. There is evidence that children who are taught to read later in childhood (age 6–7) make faster progress in early literacy than those who are taught at a younger age (4–5 years), as is current practice in the UK. Aims. Steiner‐educated children begin learning how to read at age 7, and have better reading‐related skills at the onset of instruction. Therefore, it is hypothesized that older Steiner‐educated children will make faster progress in early literacy than younger standard‐educated controls. Samples. A total of 30 Steiner‐educated children (age 7–9) were compared to a matched group of 31 standard‐educated controls (age 4–6). Method. Children were tested for reading, spelling, phonological awareness, and letter knowledge at three time points during their first year of formal reading instruction and again at the end of the second year. Results. There were no significant differences between groups in word reading at the end of the first and second year or reading comprehension at the end of the second year; however, the standard group outperformed the Steiner group on spelling at the end of both years. The Steiner group maintained an overall lead in phonological skills while letter knowledge was similar in both groups. Conclusions. The younger children showed similar, and in some cases, better progress in literacy than the older children; this was attributed to more consistent and high‐quality synthetic phonics instruction as is administered in standard schools. Consequently, concerns that 4‐ to 5‐year‐olds are ‘too young’ to begin formal reading instruction may be unfounded.     

Testing the efficacy of a new procedure for reducing faking on personality tests within selection contexts

The authors propose a new procedure for reducing faking on personality tests within selection contexts. This computer-based procedure attempts to identify and warn potential fakers early on during the testing process and then give them a chance for recourse. Two field studies were conducted to test the efficacy of the proposed procedure. Study 1 participants were 157 applicants competing for 10 staff positions at a large university located in a southern city in the People's Republic of China. In Study 1, potential fakers received a warning message, whereas nonfakers received a nonwarning (control) message. Study 2 participants were 386 Chinese college students applying for membership of a popular student organization at the same university where Study 1 was conducted. In Study 2, the warning and control messages were randomly assigned to all applicants. Results showed some promise for the proposed procedure, but several practical issues need to be considered.     

Deduction without awareness

We investigated whether two basic forms of deductive inference, Modus Ponens and Disjunctive Syllogism, occur automatically and without awareness. In Experiment 1, we used a priming paradigm with a set of conditional and disjunctive problems. For each trial, two premises were shown. The second premise was presented at a rate designed to be undetectable. After each problem, participants had to evaluate whether a newly-presented target number was odd or even. The target number matched or did not match a conclusion endorsed by the two previous premises. We found that when the target matched the conclusion of a Modus Ponens inference, the evaluation of the target number was reliably faster than baseline even when participants reported that they were not aware of the second premise. This priming effect did not occur for any other valid or invalid inference that we tested, including the Disjunctive Syllogism. In Experiment 2, we used a forced-choice paradigm in which we found that some participants were able to access some information on the second premise when their attention was explicitly directed to it. In Experiment 3, we showed that the priming effect for Modus Ponens was present also in subjects who could not access any information about P(2). In Experiment 4 we explored whether spatial relations (e.g., "a before b") or sentences with quantifiers (e.g., "all a with b") could generate a priming effect similar to the one observed for Modus Ponens. A priming effect could be found for Modus Ponens only, but not for the other relations tested. These findings show that the Modus Ponens inference, in contrast to other deductive inferences, can be carried out automatically and unconsciously. Furthermore, our findings suggest that critical deductive inference schemata can be included in the range of high-level cognitive activities that are carried out unconsciously.     

Stimulus/response learning in masked congruency priming of faces: evidence for covert mental classifications?

Reaction times for categorization of a probe face according to its sex or fame were contrasted as a function of whether the category of a preceding, sandwich-masked prime face was congruent or incongruent. Prime awareness was measured by the ability to later categorize the primes, and this was close to chance and typically uncorrelated with priming. When prime faces were never presented as visible probes within a test, priming was not reliable; when prime faces were also seen as probes, priming was only reliable if visible and masked presentation of faces were interleaved (not simply if primes had been visible in a previous session). In the latter case, priming was independent of experimentally induced face-response or face-category contingencies, ruling out any simple form of stimulus-response learning. We conclude that the reliable masked congruency priming reflects bindings between stimuli and multiple, abstract classifications that can be generated both overtly and covertly.     

How Do U.S. Students Perceive Trans Persons?

This study explored undergraduate students’ interpersonal responses, namely general feelings toward and desire for further social interaction with trans persons in a helping context. Secondarily, this study explored the relationship between participants’ intrinsic empathy, interpersonal curiosity and interest in further interaction. Two hundred fifty-one undergraduates at a moderate sized university in the southeastern United States served as participants. In order to assess baseline levels of empathy and curiosity, participants in session 1 completed the Interpersonal Reactivity Scale (Davis 1983) and the Interpersonal Curiosity Scale (Litman and Pezzo 2007). One week later, during session 2, the same students assumed the role of a peer counselor and read 1 of 4 (male, female, male-to-female, female-to-male) randomly assigned versions of an intake form completed by a fictitious peer client. Each version was identical, with the exception of the gender identity of the peer client. Participants completed various measures of affect and interest in further interaction. Male participants reported less willingness to interact with, and the strongest negative feelings toward the FTM peer client. Men reported highest willingness to interact with the MTF client and showed the lowest negative reactions towards the MTF client. Female participants’ scores on willingness to interact and on negative reactions were similar across all four intake form versions. Contrary to expectations, baseline levels of empathy and curiosity did not impact responses to gender expression. Further investigation is needed to elucidate the factors associated with anti-transgender prejudice particularly in the context of helping relationships.     

"In Search of Token Women in Academia": Some Definitions and Clarifications

This article makes an important distinction between two definitions of "token woman." In the first definition, a token woman is one of few women in a predominantly male setting. The second meaning of "Token Woman" identifies that subset of such women who have made the distinctive psychological adaptation described by Laws (1975). The methodological decisions in Young, MacKenzie, and Sherif's (1980) research are justified as based on that definitional distinction. Constantinople's critique is shown to be appropriate as an alternative to Laws' theory, but not as a criticism of our research. Alternative generational explanations for previous findings about Token Women are not supported by existing data.